.spinner {
  width: 40px;
  height: 40px;
  background-color: #333;

  border-radius: 100%;
  -webkit-animation: sk-scaleout 1.0s infinite ease-in-out;
  animation: sk-scaleout 1.0s infinite ease-in-out;

  transform: translate(-50%, -50%);
  position: absolute;
  left: 50%;
  top: 48%;
}

@-webkit-keyframes sk-scaleout {
  0% {
    -webkit-transform: scale(0)
  }
  100% {
    -webkit-transform: scale(1.0);
    opacity: 0;
  }
}

@keyframes sk-scaleout {
  0% {
    -webkit-transform: scale(0);
    transform: scale(0);
  }
  100% {
    -webkit-transform: scale(1.0);
    transform: scale(1.0);
    opacity: 0;
  }
}
